TechTalk Sept. 2016

By Staff

CCP Modulo Automated Polisher – Almost Too Good to Be True
The CCP Modulo Auto Polisher truly revolutionizes Digital Surfacing with its expanded range to 18 diopters! This extended range is only available on the Schneider CCP Modulo polishers and is one of the latest innovations by the Schneider engineering team. By extending the range of what can be polished digitally we are now able to bring superior surface quality to an even broader range of prescriptions that were previously unable to be surfaced digitally. Couple this with our Advanced Polishing System (APS) and you have a truly automated polishing experience. APS allows for the machine to operate solely on its own as it has an onboard camera system that uses a bar code system to monitor polish pad quality, lifetime and the location of the pad on the drum. This ensures that a torn, worn or damaged pad will not get re-used and damage an otherwise fine lens. Previously you had to monitor your auto polishers and watch for damaged pads so that they would not get re-used—this is now a thing of the past. The onboard camera acts like the eyes of an operator freeing up that person to perform other tasks in the lab. APS also utilizes high-speed polish macro’s that work hand-in-hand with our material specific polish pad technology allowing for the fastest cycle times per material resulting in high throughput. The CCP Modulo Auto polisher also comes with a lens rinse and drying feature to minimize polish transfer to the tray and transport clean and dry lenses through your production line. In a nutshell the CCP Modulo extends range, increases throughput (lowering your cost per lens) and reduces breakage…and Yes, it’s for real!
Kevin Cross, vice president sales, North America, Schneider Optical Machines Inc.

New Milling Process Makes the VFT-Orbit Even Faster
It’s no secret that Satisloh’s VFT-orbit is the fastest, most popular generator on the planet (over 700 units installed globally). So the question was asked ‒ can we make it faster? One of the most important advancements made in the development of the VFT-orbit 2 is in the milling process. Engineers started with a beefed-up milling spindle,  which now turns at over 35,000 rpm. At that speed, a traditional tool interface is insufficient. The standard cylindrical interface typically has about 10 microns of play- allowing the tool to be installed and removed without excessive force. At high speeds, this play translates into tool run out (wobble) and ultimately poor surface quality. In order to reach the desired RPM’s yet maintain the VFT-orbit’s hallmark surface quality, a new conical shaped tool interface was developed. This new interface virtually eliminates the need for play but still allows easy installation and removal of the tool. In addition, two more cutting surfaces were added to the tool’s “business end”, bringing the number to 14. A simple, yet very effective process change was made to further reduce cycle times and maximize productivity. Rather than waiting for the lens to reach the milling spindle before energizing, the spindle immediately begins turning when a lens is loaded in the collet chuck. This ensures it is turning at full speed before the lens even gets there, shaving precious seconds off the cycle time. Of course, many other refinements were made to this second generation machine, but none more impactful than those made to the milling process.
Ian Gregg, VP sales operations and product management, Satisloh North America

  

Advanced Technology and Increased Capabilities All in One AR Coating System
As with the semiconductor industry, the ophthalmic industry follows a similar path when it comes to manufacturing cost, performance, and capability of vacuum systems for thin film optical coatings like anti-reflection. Technology is advancing and the once single-purpose spectacle has become a multifunctional eye care device not only to reduce glare but also to reduce specific wavelengths of light, be photochromic, be hydrophobic, and also be fashionable sun wear. However, market factors are pushing equipment manufacturers to provide such advanced capability and high productivity at a lower cost than the previous generation. At Buhler, the Leybold Optics division has met this challenge by providing increased capability in our AR coating equipment with hardware, software, and process know how.  Leybold Optics launches the redesigned compact coating system the CCS 610T. This fourth generation coater now has an even more powerful ion source to make denser coatings, a thermal evaporator deposition source for hydrophobic coatings, and a new electronics design reducing the number of components. All of this is packaged into a smaller frame allowing the new CCS 610T to fit into even smaller spaces. The result of this redesign is increased processing capability while retaining an affordable entry price to low volume labs and flexibility in productivity for the high volume ophthalmic lab.
George Kim, general manager, Buhler Inc., Business Area Leybold Optics


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